From chinstrap penguins to cuckoo bees, these kleptomaniac parasites rob their fellow critters for food and supplies.

Animal tracking is time-consuming and difficult, but a new book "Where the Animals Go" by Cheshire and Umbert shows how technology is helping.

From a moose to a tick, from a coyote to a cockroach, author Rachel Levin walks us through what to do in her book, "Look Big."

Animal emotions can be surprisingly similar to ours, primatologist Frans de Waal explains in a new book, especially in our fellow mammals.

Euthanasia rates have dropped dramatically at animal shelters across the U.S.

In 'Allowed to Grow Old,' photographer Isa Leshko captures dignified portraits of elderly farm animals in sanctuaries.

Here's how you can donate or otherwise help the animals, residents and first responders affected by wildfires in Australia.

Here's a look at 10 newly identified, and exceptionally strange, animals, both living and extinct discovered in 2015.

FDA issues a proposal to improve food safety for animals. Proposed rule would require producers of treats, blamed for pet deaths, to meet new requirements.

The One Health Company seeks to find disease cures without killing animals.

There's a debate about whether liquid plant-based foods should be labeled as milk. Is it time to change the definition of milk?

These coasters are a cinch to customize for the animal-lovers in your life.

Growing food isn't about green-thumbing our nose at Mother Nature; it's about knowing her well enough to enlist her assistance.

From the fastest to the heaviest, there are some impressive flying creatures in the animal kingdom, including birds, fish and snakes.

The light from the moon influences more than you might suspect, including animal behavior and farming.

Habitat loss is devastating rare species worldwide, but as the success of wildlife corridors suggests, a little connectivity can go a long way.

Researchers are setting their sights to resurrecting passenger pigeons and woolly mammoths, but would it do more harm than good?

The lack of predators reduces the instinct to flee, according to new research.

These cool pygmy animal species show you don't have to be big to be great.

The Ili pika, an animal sometimes referred to as the 'magic rabbit,' is more endangered than the panda.

Could virtual reality change our relationship with the natural world?

Humans are social eaters, but we're not the only animal in that category. Here are other creatures who would rather eat with a group instead of alone.

Fans at a Hershey Bears hockey game threw stuffed animals on the ice so they could be donated to charities.

Max and Neo sends donation boxes to thousands of rescue groups every year.

When a shelter is 'no kill,' that doesn't always mean that every animal makes it out of there alive.

For four-legged creatures, lightning strikes create an especially lethal ground current.

After California bans new fur products, Macy’s and Bloomingdale’s also ditch fur.

The San Francisco SPCA has been ordered by the city to fire a robotic rent-a-cop used to patrol the sidewalks outside of its campus.

Georgia Aquarium's award-winning mobile app uses open-source image recognition software to help visitors identify more than 50 sea creatures.

Sharks? Snakes? The animal that's deadliest to humans probably isn't what you think it is.

A new policy allows research animals at the Food and Drug Administration (FDA) to be adopted into forever homes when their experiments end.

British government prohibits wild animals in U.K. circuses by 2020, joining similar bans in Scotland and Ireland.

Through the animal welfare group he founded, Morris Darbo is saving more than the lives of animals.

Every year, countless birds and deer get fatally entangled in soccer nets.

47 animals were saved after a daring mission to a zoo in the Gaza Strip.

Chris Van Dorn dons the cape and mask to rescue animals through his nonprofit, Batman4Paws.

Mimi Ausland began as an advocate for animals with her interactive quiz website that donates food to shelters. Now, she's tackling plastic waste in the ocean.

New $48 million installation will provide land and air services to animals of all sizes traveling through JFK airport.

The ARK at JFK will boast luxurious accommodations for all species — but not people.

Plenty of airports employ animals to handle vital duties from security detail to passenger therapy.

Therapy dogs are becoming more common at airports, but some other, more unusual animals are also helping to relieve travelers' stress.

The rules for service and support animals are changing rapidly.

Dozens of countries have banned cosmetics tested on animals, and now more U.S. states are doing the same.

Scientists say the parasitic blob H. salminicola doesn't need to breathe.

Wildlife may be making a comeback while humans stay home during the coronavirus lockdown.

A 3-legged dog named Tricycle always mourns the loss of a friend at an animal sanctuary called Horse Creek Stable in Georgia..

Prehistoric humans missed animals when they disappeared and even wondered how to get them back.

Scientists at the Peninsula Open Space Trust are studying how animals move around an increasingly fractured habitat, and the video is just one element.

Venomous animals like snakes, bees and spiders may hold the secret to curing cancer, pain management and other diseases.

National Geographic is back at it again with one of the fiercest photography competitions of the year.